Manual Steps

The Grab Source command needs the src and contrib folders of the sbcl sources to be present in ~/.cl/sys.
The Documentation for Word command looks in ~/.cl/doc/hyperspec.
You can add a --local argument to cldoc if ~/.cl/doc/cltl2 exists.

Tips

You can't interact with your Lisp interpreter unless you start a session (Control-Command-Shift-O by default).
A short presentation is available here.
I've also made a lispy theme: Coal Graal.

TextMate 2

Charles Stain started a TextMate 2 port.
The TM_2 branch incorporates his changes.